Electronic level
First Claim
1. An electronic level for converting to an electric signal a pattern surface on a leveling rod by photoelectric conversion and for determining elevation, wherein there is provided an irradiation device for irradiating auxiliary survey light by pulsed irradiation in order to eliminate shade on said pattern surface of said leveling rod, and said auxiliary survey light irradiates a field of view and said auxiliary survey light is irradiated in a fan-like shape corresponding to said field of view of said leveling rod.
1 Assignment
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Accused Products
Abstract
An electronic level for converting a pattern on a leveling rod to be collimated by photoelectric conversion and for determining difference of elevation, wherein there is provided an irradiation device for irradiating auxiliary survey light to be projected to the leveling rod by pulsed irradiation.
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Citations
4 Claims
- 1. An electronic level for converting to an electric signal a pattern surface on a leveling rod by photoelectric conversion and for determining elevation, wherein there is provided an irradiation device for irradiating auxiliary survey light by pulsed irradiation in order to eliminate shade on said pattern surface of said leveling rod, and said auxiliary survey light irradiates a field of view and said auxiliary survey light is irradiated in a fan-like shape corresponding to said field of view of said leveling rod.
Specification